[code] Add comment on how --code-script option is parsed

apps/code/app.cpp

@@ -57,6 +57,11 @@ void App::Snapshot::setOpt(const char * name, char * value) {
       }
       *separator = 0;
       const char * scriptName = value;
+      /* We include the 0 in the scriptContent to represent the importation
+       * status. It is set to 1 after addScriptFromTemplate. Indeed, this '/0'
+       * char has two goals: ending the scriptName and representing the
+       * importation status; we cannot set it to 1 before adding the script to
+       * storage. */
       const char * scriptContent = separator;
       Code::ScriptTemplate script(scriptName, scriptContent);
       m_scriptStore.addScriptFromTemplate(&script);